Storage box



FIG. 1 is a front perspective view of a storage box showing our new design;

FIG. 2 is a side view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a rear view thereof; and,

FIG. 6 is a bottom view thereof.

It will be understood that the broken lines shown in the drawings illustrate portions of the storage box that form no part of the claimed design. 

CLAIM The ornamental design for a storage box, as shown and described. 